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Low drive voltage optical modulator

  • US 6,341,184 B1
  • Filed: 09/08/2000
  • Issued: 01/22/2002
  • Est. Priority Date: 09/10/1999
  • Status: Expired due to Fees
First Claim
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1. A low drive voltage optical modulator comprising:

  • a Mach-Zehnder interferometer having an input waveguide, first and second arms connected to said input waveguide splitting an input optical signal having a predetermined wavelength into a first portion and a second portion, and an output waveguide connected to said first and second arms;

    a resonator having a refractive index and being operatively coupled to one of said first and said second arms across a gap; and

    a voltage source connected to said resonator for providing a drive voltage thereto, wherein changes in amplitude of the drive voltage cause said resonator refractive index to change;

    said changes in said resonator refractive index causing a phase-shift in the first portion of the optical signal propagating in said first arm relative to the second portion of the optical signal propagating in said second arm.

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